code: def rfft(a, n=None, axis=-1, norm=None):
      if n is None:
          n = a.shape[axis]
      if norm is None:
          norm = "backward"
      result = ivy.dft(
          a,
          axis=axis,
          inverse=False,
          onesided=False,
          dft_length=n,
          norm=norm,
      )
      slices = [slice(0, a) for a in result.shape]
      slices[axis] = slice(
          0, int(ivy.shape(result, as_array=True)[axis] // 2 + 1)
      )
      result = result[tuple(slices)]
      return result
  
file_path: ivy/ivy/functional/frontends/jax/numpy/fft.py
imports: import ivy
  from ivy.functional.frontends.jax.func_wrapper import to_ivy_arrays_and_back
  from ivy.func_wrapper import with_unsupported_dtypes
label_desc: Use image node_id 7 for calling a global function with example usage: rfft(a, n, axis, norm) and returns: result